/*
 * This file is part of Applied Energistics 2. Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved. Applied
 * Energistics 2 is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General
 * Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
 * later version. Applied Energistics 2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
 * Public License for more details. You should have received a copy of the GNU Lesser General Public License along with
 * Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.core.sync.packets;

import net.minecraft.entity.player.EntityPlayer;

import appeng.container.AEBaseContainer;
import appeng.core.sync.AppEngPacket;
import appeng.core.sync.network.INetworkInfo;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

public class PacketSwapSlots extends AppEngPacket {

    private final int slotA;
    private final int slotB;

    // automatic.
    public PacketSwapSlots(final ByteBuf stream) {
        this.slotA = stream.readInt();
        this.slotB = stream.readInt();
    }

    // api
    public PacketSwapSlots(final int slotA, final int slotB) {
        final ByteBuf data = Unpooled.buffer();

        data.writeInt(this.getPacketID());
        data.writeInt(this.slotA = slotA);
        data.writeInt(this.slotB = slotB);

        this.configureWrite(data);
    }

    @Override
    public void serverPacketData(final INetworkInfo manager, final AppEngPacket packet, final EntityPlayer player) {
        if (player != null && player.openContainer instanceof AEBaseContainer) {
            ((AEBaseContainer) player.openContainer).swapSlotContents(this.slotA, this.slotB);
        }
    }
}
